The Slack Fund is an investment fund started by Slack, in partnership with Accel, Index Ventures, KPCB, Social Capital, Andreessen Horowitz, and Spark Capital. We created the fund to support teams building products on top of Slack that enable simpler, more pleasant, and more productive workplaces.

We look for these qualities in companies:

A team with a record of success or strong potential

Products that improve where and how people work

A product built for Slack customers or built to support developers using the Slack API

Companies with a committed lead investor, early stage funding rounds only

Ready to apply for funding?

If you meet these criteria, we encourage you to submit your information. We won’t be able to fund every interested team, but regardless of funding we are grateful you have chosen to build with Slack.
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Delightful products we’ve funded

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Slack Fund FAQ

The Slack Fund is designed to back companies who are solving problems for working teams by building on the Slack platform. Our goal is to create a thriving ecosystem that seeds innovative new services and helps them grow into lasting companies.

We provide support, APIs, and the opportunity to be listed in our App Directory to all companies working with Slack. Today, the companies in our Slack Fund portfolio do not receive additional marketing or technical support, but since funded companies have an active relationship with the team at Slack, they may benefit as a result.

Slack seeks to invest in companies building products with our APIs that solve a problem for our customers or the Slack developer community. We don’t invest in consumer companies, but rather those with business-to-business or business-to-developer offerings. The fund is for teams that are building businesses with a working or close-to-working product. Please only submit for funding if your company is eligible.